Partially removing the coolant expansion tank of the high-temperature coolant circuit
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
NOTE:
TECHNICAL INFORMATION
Do not kink or bend the coolant lines otherwise there is a risk of damage.
Do not kink or bend the coolant lines otherwise there is a risk of damage.
- Unlock plug connection (1) and disconnect.
- Guide out cable (2) on coolant expansion tank (3) and set it aside.
- Loosen clamp (4) .
- Unlock plug connection (5) and disconnect.
- Loosen clamp (1) .
- Loosen screws (2) .
- Release rubber mount (4) from expanding pin (5) .
- Guide out expansion tank (3) and set it aside.